| // Promise.all is good for executing many promises at once | |
| Promise.all([ | |
| promise1, | |
| promise2 | |
| ]); | |
| // Promise.resolve is good for wrapping synchronous code | |
| Promise.resolve().then(function () { | |
| if (somethingIsNotRight()) { | |
| throw new Error("I will be rejected asynchronously!"); |
| $ ffmpeg -i input.mp4 -vcodec h264 -acodec mp2 output.mp4 |
I had some trouble getting Ember-CLI and Ember-Data working with my existing HTTP API. These are the things I had to do to get it working:
My API returns underscored_keys, not camelizedKeys. It's not exactly the standard ActiveModel, but it's quite similar. I started by defining a default (application) serializer that's a simple subclass of DS.ActiveModelSerializer:
// app/serializers/application.js
import DS from "ember-data";
| var h = require('virtual-dom/h'); | |
| var diff = require('virtual-dom/diff'); | |
| var patch = require('virtual-dom/patch'); | |
| var createElement = require('virtual-dom/create-element'); | |
| var Delegator = require('./dom-delegator') | |
| var state = { | |
| clicks: function (ev) { | |
| delegator.unlistenTo('click') | |
| console.log(ev) |
| See my DASH-IF presentation from October, 2014: | |
| https://s3.amazonaws.com/misc.meltymedia/dash-if-reveal/index.html#/ | |
| 1. encode multiple bitrates with keyframe alignment: | |
| ffmpeg -i ~/Movies/5D2_Portrait.MOV -s 1280x720 -c:v libx264 -b:v 1450k -bf 2 \ | |
| -g 90 -sc_threshold 0 -c:a aac -strict experimental -b:a 96k -ar 32000 out.mp4 | |
| My input was 30 fps = 3000 ms. If it were 29.97, then a GOP size of 90 frames will yield a base segment | |
| size of 3003 milliseconds. You can make the segment size some multiple of this, e.g.: 6006, 9009, 12012. |
| HTTP status code symbols for Rails | |
| Thanks to Cody Fauser for this list of HTTP responce codes and their Ruby on Rails symbol mappings. | |
| Status Code Symbol | |
| 1xx Informational | |
| 100 :continue | |
| 101 :switching_protocols | |
| 102 :processing |
Hear these samples in action (actually, they're all silent)
data:audio/wav;base64,UklGRigAAABXQVZFZm10IBIAAAABAAEARKwAAIhYAQACABAAAABkYXRhAgAAAAEA
data:audio/mpeg;base64,SUQzBAAAAAAAI1RTU0UAAAAPAAADTGF2ZjU4Ljc2LjEwMAAAAAAAAAAAAAAA/+M4wAAAAAAAAAAAAEluZm8AAAAPAAAAAwAAAbAAqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq1dXV1dXV1dXV1dXV1dXV1dXV1dXV1dXV1dXV1dXV1dXV////////////////////////////////////////////AAAAAExhdmM1OC4xMwAAAAAAAAAAAAAAACQDkAAAAAAAAAGw9wrNaQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA/+MYxAAAAANIAAAAAExBTUUzLjEwMFVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV/+MYxDsAAANIAAAAAFVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV/+MYxHYAAANIAAAAAFVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
data:audio/ogg;base64,T2dnUwACAAAAAAAAAAAyzN3NAAAAAGFf2X8BM39GTEFDAQAAAWZMYUMAAAAiEgASAAAAAAAkFQrEQPAAAAAAAAAAAAAAAAAAAAAAAAAAAE9nZ1MAAAAAAAAAA
The installation directions for marvel -- a plugin for elastic search -- is very scant and unnecessarily indirect. The clearest instructions I found on how to install the marvel plugin through homebrew was on Twitter! Twitter! Why?! Anyways, to install marvel via brew, you can do this:
brew update
brew upgrade elasticsearch
cd /usr/local/Cellar/elasticsearch/<whatever version>
bin/plugin -i elasticsearch/marvel/latest
This is an example of creating a PNG from an SVG. (You should notice that you're able to right click on the last image and save it as a PNG image.) It has been Tested in Firefox and Chrome but doesn't work in Safari as of 2014-07-20.
Normally, you'll create your SVG in D3 but to make the example a bit more readable, the SVG is already placed in the document. There are a few important points. Namely:
<defs> tags. (These styles should be escaped using the <![[CDATA[ ... ]] tag.)Note: Portions of this demo where taken from The New York Times' excellent Crowbar SVG extractor.